a = 2:3:8
size_a = size(a)
b = [a' a' a']
size_b = size(b)
c = b(1:2:3,1:2:3)
size_c = size(c)
d = a + b(2,:)
size_d = size(d)
w = [zeros(1,3) ones(3,1)' 3:5']
size_w = size(w)
b([1 3], 2) = b([3 1],2)
size_b = size(b)
e = 1:-1:5
size_e = size(e)